Global Change and the Earth System: A Planet Under PressureThe interactions between environmental change and human societies have a long, complex history spanning many millennia, but these have changed fundamentally in the last century. Human activities are now so pervasive and profound that they are altering the Earth in ways which threaten the very life support system upon which humans depend. This book describes what is known about the Earth System and the impact of changes caused by humans. It considers the consequences of these changes with respect to the stability of the Earth System and the well-being of humankind; as well as exploring future paths towards Earth System science in support of global sustainability. |
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Page 6
... soil structure , soil biology and climate ( Vitousek et al . 1986 ; Turner et al . 1990 ; Daily 1995 ) ; more nitrogen is now fixed into available forms through the production of fertilisers and burning of fossil fuels than is fixed ...
... soil structure , soil biology and climate ( Vitousek et al . 1986 ; Turner et al . 1990 ; Daily 1995 ) ; more nitrogen is now fixed into available forms through the production of fertilisers and burning of fossil fuels than is fixed ...
Page 24
... soil and biota, but until recently the converse influence of soil and the biota on climate has been viewed as either very slight or non-existent (Walter and Breckle 1985). How- ever, it has now been demonstrated that the Earth's hy ...
... soil and biota, but until recently the converse influence of soil and the biota on climate has been viewed as either very slight or non-existent (Walter and Breckle 1985). How- ever, it has now been demonstrated that the Earth's hy ...
Page 25
... soil profile , be absorbed by plant roots and evaporated through leaves back to the atmosphere ( transpira- tion ) . Evaporation and transpiration provide a recycling of water back to the atmosphere , and in some continental regions ...
... soil profile , be absorbed by plant roots and evaporated through leaves back to the atmosphere ( transpira- tion ) . Evaporation and transpiration provide a recycling of water back to the atmosphere , and in some continental regions ...
Page 27
... soil moisture . Depending on ini- tial conditions of high or low albedo in the Sahara , the coupled model yields either a desert or a vegetated Sa- hara . Changes in albedo are found to be more important than changes in other surface ...
... soil moisture . Depending on ini- tial conditions of high or low albedo in the Sahara , the coupled model yields either a desert or a vegetated Sa- hara . Changes in albedo are found to be more important than changes in other surface ...
Page 29
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Contents
1 | |
6 | |
Harvard University USA The University of Newcastle | 60 |
Claussen Martin | 75 |
How Humans are Changing the Earth System | 81 |
3 | 109 |
Magnitudes Rates and Significance of Human Changes | 131 |
4 | 142 |
Department of Geosciences Harvey Nick | 166 |
5 | 203 |
NASA Headquarters Washington DC USA Potsdam Institute for Climate Impact Research | 234 |
Dalhousie University Canada Scholes R | 251 |
References | 299 |
Mitra A | 305 |
Acknowledgements | 307 |
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aerosol aerosol particles Africa agricultural anthropogenic areas Asia atmos atmospheric CO2 Berlin Heidelberg biodiversity Biogeochem Cy biological biomass biosphere Cambridge carbon cycle century chemical climate change climate system CO₂ coastal zone complex concentration decades deforestation dynamics Earth System functioning ecosys ecosystems effects emissions ENSO environment environmental estimated example extinction feedbacks fertilisation flux forcing forest fossil fuel Gaia Geophys Res glacial Greenland growth Heidelberg New York Holocene human activities human-driven hydrological hydrological cycle ice core IGBP IGBP Global Change impacts important increase influence interactions IPCC land-cover Lovelock marine natural nitrogen North Atlantic nutrients ocean organic ozone past patterns perturbation photosynthesis phytoplankton plant population processes production radiative forcing record regions responses river role scale Science sediment significant simulations soil solar species surface temperature terrestrial ecosystems Tg N yr–1 thermohaline circulation tion transport trends tropical tropospheric variability vegetation warming Younger Dryas